A Kubernetes Deployment is a controller that manages the lifecycle of stateless applications by defining the desired number of replicas and update strategy. It enables controlled rollouts, scaling, and rollbacks of applications. Also known as a K8s deployment, it is one of the most commonly used Kubernetes resources.
Deployments make application releases predictable and repeatable in Kubernetes. Without deployments, teams would need to manage pod creation, scaling, and updates manually, increasing the risk of downtime and configuration errors.
Users define a Deployment manifest specifying container images, replicas, and update policies. The Deployment controller creates or updates ReplicaSets and continuously reconciles the desired state by scaling pods up or down as needed.
BuildPiper standardises Kubernetes Deployments by enforcing rollout strategies, approvals, and observability. It provides visibility into deployment health and impact, enabling teams to release applications safely and consistently across environments.
A Deployment manages ReplicaSets and provides higher-level features like rolling updates and rollback, while a ReplicaSet only ensures a specified number of pods are running.
Deployments are best suited for stateless workloads. Stateful applications typically use StatefulSets for stable identities and persistent storage.
BuildPiper improves Kubernetes Deployments by adding governance, standardisation, and observability around rollout strategies, ensuring safer and more predictable releases.